_____________

                                  No. 96-1414
                                 _____________

United States of America,              *
                                       *
      Plaintiff - Appellant,           *
                                       *      Appeal from the United States
      v.                               *      District Court for the
                                       *      District of Minnesota.
David R. Brown,                        *
                                       *
      Defendant - Appellee.            *

                                 _____________

                         Submitted:   October 22, 1996

                             Filed:   March 11, 1997
                                 _____________

Before FAGG, HEANEY, and HANSEN, Circuit Judges.
                              _____________


HANSEN, Circuit Judge.

      The government appeals the order of the district court1 granting
Defendant David R. Brown's motion for a new trial.     United States v. Brown,

(D. Minn. 1996).      A jury convicted Brown on two counts
of   violating   the   Medicaid/Medicare   Anti-kickback   statute,   42   U.S.C.
§ 1320a-7b(b) (1994).      The district court granted Brown's post-verdict
motion for a new trial based on its findings that the jury was exposed to
prejudicial extrinsic information and that certain members of the jury
engaged in misconduct.    The government contends that Brown waived any claim
to a new trial that he might have had.     We affirm the order of the district
court.




      1
      The Honorable David S. Doty, United States District Judge
for the District of Minnesota.
                                             I.


      On August 4, 1994, the government indicted Caremark, Inc. (Caremark),
Brown, and four other individual defendants alleging that these parties
participated in a kickback scheme involving multiple counts of mail fraud,
wire fraud, money laundering, and violations of the Medicaid/Medicare Anti-
kickback statute.       Among other allegations, the government claimed that
Brown, a physician practicing pediatric endocrinology, solicited and
received payments from Caremark, a home health care company that was the
exclusive home health distributor of an expensive growth hormone called
Protropin, in exchange for Brown's referral of patients for whom he
prescribed Protropin and who were participants in the Medicaid program.2



      On June 20, 1995, approximately one month before the trial was set
to begin, Caremark pleaded guilty to one count of mail fraud and agreed to
pay   a   total   of   $161   million   in    fines,   penalties,   and   restitution.
Consequently, only Brown and his four co-defendants3 proceeded to trial on
August 2, 1995.


      On October 3, 1995, at the close of the government's case-in-chief,
the district court granted the four co-defendants' motions for judgment of
acquittal on all counts.          The court also granted Brown's motion for
judgment of acquittal on several counts but directed the trial to proceed
on 19 remaining counts against Brown.




      2
      In the normal course of business, physicians prescribing
Protropin for their patients give the prescriptions to Caremark,
and Caremark fills the prescriptions and delivers the Protropin
to the patients' homes; Caremark then submits the bills for the
Protropin to the patients' insurance companies.
      3
      Three of Brown's co-defendants were executives at Caremark,
while the fourth co-defendant was an executive at Genentech,
Inc.--the company that first developed and now manufactures
Protropin.

                                             -2-
Two days later, on October 5, both the government and Brown's counsel asked
the court to conduct an individual voir dire of the jurors based on their
belief that the jurors may have witnessed Brown's co-defendants celebrating
in the hallway following their acquittals on October 3 and that the jurors
may have been exposed to ensuing news accounts that referred to the co-
defendants' acquittals and Caremark's previous guilty plea and agreement
to pay a $161 million fine.      The court agreed, and on the next day of
trial, October 10, the court conducted a voir dire of the jurors initially
as a panel and then individually in chambers.     The court's inquiry revealed
that several jurors were aware that Brown's co-defendants were acquitted;
some jurors witnessed celebratory activity by Brown's co-defendants while
others had friends or relatives, who had read or heard the news reports,
inform them that Brown was the only remaining defendant.        At this time,
however, none of the jurors stated that they were aware of Caremark's
guilty plea and payment of the fine.4     At the conclusion of this voir dire,
neither the government nor defense counsel moved for a mistrial.     Instead,
they   opted for a limiting instruction.         The court gave a limiting
instruction in open court explaining that all of the charges against
Brown's co-defendants and some of the charges against Brown had been
disposed of, but the jury was not to concern itself with the reasons for
their disposition and that its verdict regarding the remaining charges
against Brown was to be based solely on the evidence that had been received
in the courtroom.


       The following day, the parties made their closing arguments, and the
court instructed the jury.   The jury began their deliberations the next day
-- Thursday, October 12.     On Monday,




       4
      One juror claimed that another juror told her that he had
read an article about the case that referred to Caremark's guilty
plea and payment of the fine, but he denied having read the
article when he was questioned by the court.

                                     -3-
October 16, the court received a note from juror Dale Dickinson that read:


      Judge Doty, I am concerned about information that has come to the
      jury but was not part of the evidence. On Thursday, October 12, when
      [Juror Asphaug] was asked to comment, he stated that "[Juror Ulmen]
      and I have information that the rest of you do not have." He went
      on to say that "Care mark [sic] was found guilty of this same crime
      and paid a fine of $367,000,000." [Juror Shelley] quickly stated
      that she did not want this information and did not wish to hear any
      more . . . .     At the end of the day on Friday I saw this same
      information affect another discussion.

(quoting 10/16/95 Tr. at 6).   At a meeting with
lawyers for Brown and the government, the court explained that it had
received this note and disclosed its contents.       The court offered an
instruction to be sent back to the jury.       After some discussion and
modifications made by defense counsel, the parties agreed to send the
following written instruction back to the jury:


      The court has learned that discussions concerning matters that are
      not part of this case have occurred during jury deliberations.
      Please remember the court's instructions that you are not to consider
      in your deliberations on this defendant anything that may have
      occurred outside the courtroom. Such matters are not proper evidence
      and must be entirely disregarded. Your verdict must be based only
      on the evidence in this case.

made a motion for mistrial.


      On October 19, after three additional days of deliberations, the jury
found Brown guilty on two of the nineteen counts submitted against him.
After the verdict was published, and over the government's objection, the
court granted defense counsel's request to have the court individually voir
dire the jurors in chambers regarding the possibility that they had
considered extrinsic




                                   -4-
information in reaching their verdict.      Although most of the jurors denied
considering any extrinsic information, two jurors revealed that Caremark's
plea and payment of the fine continued to be considered by the jury.
(Appellant's App. at A-125-26, A-129-30.)


     Subsequently,    Brown   filed   a   motion   for   a   new   trial.   After
considering the government's response, the district court granted Brown's
motion for a new trial based on juror misconduct and the jury's exposure
to extrinsic information.     Brown, 913 F. Supp at 1333.


                                      II.


     The government contends that the dispositive issue in this case is
whether Brown waived his claim to a new trial.      While we review a district
court's decision to grant a new trial for an abuse of discretion, United
States v. Blumeyer, 

, 1015 (8th Cir. 1995), the underlying
issue of whether Brown waived his claim is a mixed question of law and
fact, for which we review the district court's factual findings for clear
error and its legal conclusion de novo.       See United States v. Farris, 

, 396 (11th Cir. 1996); United States v. Veltman, 

, 721
(8th Cir. 1993).   Thus, our review in this case involves two steps: first,
given the undisputed factual findings of the district court, we review de
novo the court's determination that Brown did not waive his claim to a new
trial; then, based on our decision on the waiver issue, we determine
whether the district court abused its discretion in granting Brown a new
trial.   See Harmon v. United States through Farmers Home Admin., 

, 586 (8th Cir. 1996) (finding that application of abuse of discretion
standard involves reviewing legal questions de novo and factual findings
for clear error); Waible v. McDonald's Corp., 

, 926 (8th Cir.
1991) (same).




                                      -5-
                                     A.


      The government argues that Brown waived his right to a new trial by
opting for limiting instructions instead of moving for a mistrial each time
he learned that the jury had been exposed to extrinsic information.     The
government relies upon several cases holding that a party who becomes aware
of a problem with the jury before the verdict is rendered but fails to
inform the court of the problem waives any subsequent claim the party might
have to a new trial based on such jury difficulties.     See, e.g., United
States v. Hoelscher, 

, 1542-43 (8th Cir. 1990); United States
v.   Dean, 

, 733-34 (8th Cir. 1982).        The Fifth Circuit
succinctly articulated this principle when it stated that "a defendant
cannot learn of juror misconduct during the trial, gamble on a favorable
verdict by remaining silent, and then complain in a post-verdict motion
that the verdict was prejudicially influenced by that misconduct."   United
States v. Jones, 

, 488 n.3 (5th Cir. 1979).     The government
contends that on both October 10 and October 16, Brown and his lawyers were
fully aware of the extent and nature of the extrinsic information reaching
the jury and that by failing to move for a mistrial on those occasions they
waived their right to a new trial.    Additionally, the government argues
that the only "new" information revealed to Brown from the court's post-
verdict    voir dire on October 19 was the effect that the extrinsic
information had on the jurors' decisions and that such information is
barred by Federal Rule of Evidence 606(b) and consequently cannot form the
basis for a new trial.


      We believe that the district court correctly concluded that Brown did
not waive his right to seek a new trial. "[W]aiver is the `intentional
relinquishment or abandonment of a known right.'"   United States v. Olano,

, 733 (1993) (quoting Johnson v. Zerbst, 

, 464
(1938)).    In this case, Brown did not withhold the incidents of jury
misconduct from the trial court.




                                   -6-
The court was fully aware of the problems with the jury as soon as, if not
sooner than, Brown was.       Moreover, when Brown agreed to have the court give
limiting instructions to the jury, he justifiably presumed that the jury
would follow the court's instructions to disregard the extrinsic evidence.
See Ryan v. Board of Police Comm'rs, 

, 1082 n.1 (8th Cir. 1996)
(jury presumed to follow court's instructions).                 It wasn't until the
court's post-verdict voir dire on October 19 that Brown became aware that,
despite the court's instructions to the contrary, the jury had continued
to consider the fact that Caremark pleaded guilty and agreed to pay a $161
million fine.5   Consequently, we cannot say that Brown waived his right to
a new trial.     Cf. Yannacopoulos v. General Dynamics Corp., 

,
1305 (8th Cir. 1996) (finding that a party who had not objected to the
court's limiting instruction had waived his claim to new trial where there
was no evidence that the jury had disregarded the instruction).


     Moreover,     we    do   not   believe     that   Rule   606(b)   prohibits    the
consideration    of     the   evidence   that   the    jury   continued   to   consider
Caremark's plea and payment of a fine.             Although Rule 606(b) generally
prevents a juror from testifying "as to any matter or statement occurring
during the course of the jury's deliberations or to the effect of anything
upon that or any other juror's mind," the rule does allow jurors to
"testify on the question whether extraneous prejudicial information was
improperly brought to the jury's attention or whether any outside influence
was improperly brought to bear upon any juror."           Fed. R. Evid. 606(b).      We
believe that under Rule 606(b) the district court properly considered the
testimony of the jurors to the extent that their testimony revealed that
the extrinsic information continued to be considered by the




     5
      Although Brown, on appeal, submits evidence that the
court's second limiting instruction reached only one member of
the jury, we limit our review to the record as it appeared before
the district court.

                                          -7-
jury.       Admittedly, some of the court's questions as well as portions of the
jurors' testimony may have encroached areas that are off-limits under Rule
606(b). (See Appellant's       App. A-126, A-130.)   In granting Brown's motion
for a new trial, however, the district court addressed this problem and
explicitly based its decision only on evidence admissible under Rule
606(b).       

n.4.   Because Brown did not know that
the jury continued to consider the prejudicial extrinsic information
regarding Caremark until after the verdict, we conclude that the district
court properly determined that Brown had not waived his right to a new
trial.


                                          B.
        In its reply brief, the government for the first time argues that
even if Brown did not waive his right to a new trial, he is not entitled
to   one     because the strength of the government's case against Brown
sufficiently outweighed any possible prejudice caused by the extrinsic
evidence.        Absent some reason for failing to raise an argument in an
opening brief, this court will not consider an argument first raised in a
reply brief.       United States v. Darden, 

, 1549 n.18 (8th Cir.
1995).       The government has not offered any justification for its failure
to raise this issue in its initial brief; consequently, we choose not to
review it.6
        Having found that Brown did not waive his right to a new trial, we
hold that the district court did not abuse its discretion in granting
Brown's motion for a new trial.7      8




        6
      We note that even while raising this argument in its reply
brief, the government emphasizes that "the sole issue on this
appeal" is whether Brown waived his right to a new trial.
(Appellant's Reply Br. at 5.)
        7
      So holding, we need not review the court's decision to
grant a new trial on the alternative basis of individual juror
misconduct.
        8
      We also find it unnecessary to rule on appellee's motion
for enlargement of the record.

                                          -8-
                            III.


Accordingly, we affirm the order of the district court.


A true copy.


     Attest:


           CLERK, U. S. COURT OF APPEALS, EIGHTH CIRCUIT.




                            -9-